Autodesk 64006-051108-9001 User Guide - Page 197

Compression Buffer Window (Windows Media only), Video Quality (Windows Media only), Intermediate

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Encode Tab 189 Data Rate Units Two similar units are used for measuring data rates. Most multimedia developers are familiar with kilobytes per second (KBps or KBytes/sec) whereas many people working with Internet/ network video specify files in kilobits per second (kbps or kbits/sec). A byte is eight times as large as a bit, so it is important to understand in which unit a data rate is being specified. The Cleaner default setting displays the data rate in bits per second (bps). You can change this setting in the Preferences dialog. In data rate (either bits or bytes), uppercase K denotes 1024, which is normally used for multimedia applications. Lowercase k represents exactly 1000, which is often used in the telecommunications industry. Uppercase B represents a Byte; lowercase b a bit. To change between units of measure, choose Cleaner > Preferences to access the Preferences dialog and select the desired data rate units. If you switch units, Cleaner automatically changes the display units in the interface and converts the current data rate into the equivalent data rate using the new units. The final file size is not affected by changing how the data rate is displayed. Compression Buffer Window (Windows Media only) The Compression Buffer Window affects the duration of the buffering process during playback of a streaming clip. When a clip is streaming, the media player buffers a few seconds of the clip before beginning to play back. The more of the clip is buffered, the smoother the playback will be in the event of network glitches. However, buffering takes time, and a large value will cause a significant delay before playback begins. How much of a delay will depend on the data rate of your clip and the speed of the network connection. Video Quality (Windows Media only) Specifies the balance between frame rate and image sharpness for the video track. • Intermediate - Attempts to balance frame rate and visual clarity. This is the best choice for most content. • Best Image Quality - Attempts to create a sharper image at the expense of frame rate. The video may appear jerkier as a result • Smoothest Video - Produces smoother motion by increasing the frame rate at the expense of image clarity. The video may appear blurrier as a result.

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Encode Tab
189
Data Rate Units
Two similar units are used for measuring data rates. Most multimedia developers are familiar
with kilobytes per second (KBps or KBytes/sec) whereas many people working with Internet/
network video specify files in kilobits per second (kbps or kbits/sec). A byte is eight times as
large as a bit, so it is important to understand in which unit a data rate is being specified.
The Cleaner default setting displays the data rate in bits per second (bps). You can change this
setting in the Preferences dialog. In data rate (either bits or bytes), uppercase K denotes 1024,
which is normally used for multimedia applications. Lowercase k represents exactly 1000,
which is often used in the telecommunications industry. Uppercase B represents a Byte;
lowercase b a bit.
To change between units of measure, choose Cleaner > Preferences to access the Preferences
dialog and select the desired data rate units.
If you switch units, Cleaner automatically changes the display units in the interface and
converts the current data rate into the equivalent data rate using the new units. The final file
size is not affected by changing how the data rate is displayed.
Compression Buffer Window (Windows Media only)
The Compression Buffer Window affects the duration of the buffering process during playback
of a streaming clip. When a clip is streaming, the media player buffers a few seconds of the clip
before beginning to play back. The more of the clip is buffered, the smoother the playback will
be in the event of network glitches. However, buffering takes time, and a large value will cause
a significant delay before playback begins. How much of a delay will depend on the data rate
of your clip and the speed of the network connection.
Video Quality (Windows Media only)
Specifies the balance between frame rate and image sharpness for the video track.
•
Intermediate
— Attempts to balance frame rate and visual clarity. This is the best choice for
most content.
•
Best Image Quality
— Attempts to create a sharper image at the expense of frame rate. The
video may appear jerkier as a result
•
Smoothest Video
— Produces smoother motion by increasing the frame rate at the expense
of image clarity. The video may appear blurrier as a result.